无法使用java在ms-access中创建自动增量主键字段

时间:2014-11-04 10:19:57

标签: java ms-access-2007 ucanaccess

我需要创建一个带有自动增量主键列的表>我尝试使用以下代码,但它会引发错误。

我的代码:

     CreateTableAccess.CreateAccessTable("CREATE TABLE D_Centre\n"
            + "(\n"
            + "    SlNo AUTOINCREMENT,\n"
            + "    CentreID VARCHAR,\n"
            + "    CentreName VARCHAR,\n"
            + "    [Createddate] DateTime,  \n"
            + "    CreatedBy VARCHAR, \n"
            + "    [Updateddate] DateTime\n"
           + ")", "D_Centre");


    public static void CreateAccessTable(String sqlscript, String tablename )
{
    String dbFileSpec = DataEntryScreen.homedirectory+"/"+"Dataentry.accdb";
    Connection conn = null ;
    try {
        conn = DriverManager.getConnection("jdbc:ucanaccess://" + dbFileSpec);
    } catch (SQLException ex) {
        Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
    }
        DatabaseMetaData dmd = null;
    try {
        dmd = conn.getMetaData();
    } catch (SQLException ex) {
        Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
    }
            ResultSet rs = null;
    try {
        rs = dmd.getTables(null, null, tablename , new String[]{"TABLE"});
    } catch (SQLException ex) {
        Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
    }
        // }
        {
        try {
            if (rs.next()) {
                System.out.println("Table ["+tablename+"] already exists.");
            } else {
                System.out.println("Table ["+tablename+"] does not exist.");
                Statement s = conn.createStatement();
                  s.executeUpdate(sqlscript);
                System.out.println("Table ["+tablename+"] created.");
            }
        } catch (SQLException ex) {
            Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
            System.err.println("Error in table creation  --> "+ex.toString());
        }
        try {
            conn.commit();
        } catch (SQLException ex) {
            Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
        }
        try {
            conn.close();
        } catch (SQLException ex) {
            Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
        }

}
}  

错误: 2014年11月4日下午3:39:28 org.DataEntryApplication.view.CreateTableAccess CreateAccessTable 严重:空 net.ucanaccess.jdbc.UcanaccessSQLException:未找到类型或用户缺少权限:AUTOINCREMENT     at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:164)     at org.DataEntryApplication.view.CreateTableAccess.CreateAccessTable(CreateTableAccess.java:53)     at org.DataEntryApplication.view.AccessProcess.accessProcess(AccessProcess.java:40)     在org.DataEntryApplication.view.DataEntryScreen.addComponentsToPane(DataEntryScreen.java:188)     在org.DataEntryApplication.view.DataEntryScreen.createAndShowGUI(DataEntryScreen.java:1092)     在org.DataEntryApplication.view.Login $ 7.actionPerformed(Login.java:277)     在javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)     在javax.swing.AbstractButton $ Handler.actionPerformed(AbstractButton.java:2341)     在javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)     在javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)     在javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)     在java.awt.Component.processMouseEvent(Component.java:6505)     在javax.swing.JComponent.processMouseEvent(JComponent.java:3320)     at java.awt.Component.processEvent(Component.java:6270)     at java.awt.Container.processEvent(Container.java:2229)     at java.awt.Component.dispatchEventImpl(Component.java:4861)     at java.awt.Container.dispatchEventImpl(Container.java:2287)     at java.awt.Component.dispatchEvent(Component.java:4687)     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)     at java.awt.Container.dispatchEventImpl(Container.java:2273)     at java.awt.Window.dispatchEventImpl(Window.java:2719)     at java.awt.Component.dispatchEvent(Component.java:4687)     at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)     at java.awt.EventQueue.access $ 200(EventQueue.java:103)     at java.awt.EventQueue $ 3.run(EventQueue.java:694)     at java.awt.EventQueue $ 3.run(EventQueue.java:692)     at java.security.AccessController.doPrivileged(Native Method)     at java.security.ProtectionDomain $ 1.doIntersectionPrivilege(ProtectionDomain.java:76)     at java.security.ProtectionDomain $ 1.doIntersectionPrivilege(ProtectionDomain.java:87)     at java.awt.EventQueue $ 4.run(EventQueue.java:708)     at java.awt.EventQueue $ 4.run(EventQueue.java:706)     at java.security.AccessController.doPrivileged(Native Method)     at java.security.ProtectionDomain $ 1.doIntersectionPrivilege(ProtectionDomain.java:76)     at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)     at java.awt.EventDispatchThread.run(EventDispatchThread.java:91) 引起:java.sql.SQLException:未找到类型或用户缺少权限:AUTOINCREMENT     at net.ucanaccess.jdbc.AbstractExecute.addDDLCommand(AbstractExecute.java:105)     at net.ucanaccess.jdbc.AbstractExecute.executeBase(AbstractExecute.java:127)     在net.ucanaccess.jdbc.ExecuteUpdate.execute(ExecuteUpdate.java:56)     at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:162)     ......还有41个

表格创建错误 - > net.ucanaccess.jdbc.UcanaccessSQLException:未找到类型或用户缺少权限:AUTOINCREMENT

1 个答案:

答案 0 :(得分:3)

确保您使用的是最新版本的UCanAccess,here

我刚刚尝试了以下UCanAccess 2.0.9.1,它对我来说很好。

s.executeUpdate(
        "CREATE TABLE D_Centre (" +
                "slNo AUTOINCREMENT PRIMARY KEY, " +
                "CentreID VARCHAR(100) " +
            ")");

编辑重新评论

UCanAccess 2.0.9.1(及更高版本)也支持列的DEFAULT值。我刚测试了这个并且它有效:

s.executeUpdate(
        "CREATE TABLE D_Centre (" +
                "slNo AUTOINCREMENT PRIMARY KEY, " +
                "Centre VARCHAR(100) DEFAULT 'foo' " +
            ")");